GN 155 - Microphone AKG - Free user manual and instructions

USER MANUAL GN 155 AKG

Audio ground Audio + Audio - LED + LED -

Modules Thank you for purchasing a Discreet Acoustics module! The Discreet Acoustics Modular Series comprises five Capsule Modules and eighteen Installation Modules. All modules are interchangeable so you can put together the ideal Discreet Acoustics Modular microphone for every application at any location. CK 31 (Order no. 2765Z0020): Screw-on cardioid Cap- sule Module. With W 30 foam windscreen. CK 32 (Order no. 2765Z0021): Screw-on omnidirectional Capsule Module. With W 30 foam windscreen. CK 33 (Order no. 2765Z0022): Screw-on hypercardioid Capsule Module. With W 30 foam windscreen. CK 47 (Order no. 2765Z0023): Screw-on hypercardioid Capsule Module. Acoustically equivalent to the proven AKG C 747. With W 70 foam windscreen. CK 80 (Order no. 2765Z0024): Screw-on hypercardioid Capsule Module with speech-optimized frequency re- sponse. With W 80 foam windscreen. 2 Description 1 Safety and Environment

1. Do not spill any liquids on the equipment and do not drop anyobjects through the ventilation slots in the equipment.2. Do not place the equipment near heat sources such as radia-tors, heating ducts, or amplifiers, etc. and do not expose it to di-rect sunlight, excessive dust, moisture, rain, mechanicalvibrations, or shock.3. The packaging of the equipment is recyclable. To dispose of thepackaging, make sure to use a collection/recycling system pro-vided for that purpose and observe local legislation relating towaste disposal and recycling.4. Electrostatic charges may damage electronic circuits. Therefore,be sure to touch a bare, grounded metal part to discharge anystatic charge that may have built up on your body, before touch-ing any electronic circuit board. 4513_09_BDA_DAM_Hex0909_ps.qxd 11.09.2009 10:45 Uhr Seite 2324 DISCREET ACOUSTICS modular 2 Description

Modules The W 30 is a newly designed, two-layer windscreen. A special combination of two different materials provides optimum rejection of wind noise. GN 15 (Order no. 2765Z0001): 160-mm (6.3-in.) goose- neck with DPA external in-line XLR phantom power adapter for permanent screw-on installation. GN 15 E (Order no. 2765Z0002): 235-mm (9.25-in.) gooseneck with integrated XLR phantom power adapter for temporary installation and PS 3 F-Lock panel mount socket. GN 15 E 5PIN (Order no. 2765Z0039): 235-mm (9.25-in.) gooseneck with integrated phantom power adapter and 5-pin XLR connector, for external LED ring powering. GN 15 ESP (Order no. 2765Z0045): 258-mm (10.2-in.) gooseneck module for temporary installation. With integrated DPA-P XLR phantom power adapter, pro- grammable ON/OFF switch, switchable bass cut, de- featable LED ring, and PS 3 F-Lock panel mount socket. GN 15 HT (Order no. 2765Z0017): The GN 15 HT Instal- lation Module allows you to connect any Discreet Acoustics Capsule Module to the HT 4000 handheld transmitter from AKG. With 60-mm (2.4-in.) goose- neck for precise positioning of the Capsule Module and status indicator LED ring. GN 30 (Order no. 2765Z0003): Identical to GN 15. 305 mm (12 in.) long. GN 30 OC (Order no. 2765Z0005): 305-mm (12-in.) gooseneck with unterminated leads for permanent screw-on installation GN 30 E (Order no. 2765Z0004): Identical to GN 15 E. 380 mm (15 in.) long. GN 30 E 5PIN (Order no. 2765Z0040): Identical to GN 15 E 5PIN, 380 mm (15 in.) long. GN 30 ESP (Order no. 2765Z0046): Identical to GN 15 ESP. 403 mm (15.9 in.) long. GN 30 Minijack (Order no. 2765Z0036): 305-mm (12- in.) gooseneck with mini jack plug, HCS mounting flange, and permanently connected DPA phantom power adapter with 3-pin XLR connector. GN 50 (Order no. 2765Z0008): Identical to GN 15. 500 mm (20 in.) long. 4513_09_BDA_DAM_Hex0909_ps.qxd 11.09.2009 10:45 Uhr Seite 2425 DISCREET ACOUSTICS modular

Accessories GN 50 E (Order no. 2765Z0004): Identical to GN 15 E. 572 mm (22.5 in.) long. GN 50 E 5PIN (Order no. 2765Z0041): Identical to GN 15 E 5PIN, 572 mm (22.5 in.) long. GN 50 ESP (Order no. 2765Z0047): Identical to GN 15 ESP. 598 mm (23.5 in.) long. GN 50 Minijack (Order no. 2765Z0037): Identical to GN 30 Minijack. 500 mm (20 in.) long. GN 155 SET (Order no. 2765Z0018): The GN 155 SET In- stallation Module comprises a 149-cm (61-in.) goose- neck with an LED ring, 10-m (33-ft.) cable, and DPA phantom power adapter, an ST 305 floor stand, and a 10-cm (4-in.) extension stub with protective sheath. HM 1000 (Order no. 2765Z0010): Hanging module with 10-m (33-ft.) cable and DPA in-line XLR phantom power adapter. All Installation Modules feature an LED ring that is lit to indicate the microphone is ready to operate. B 18 battery power supply for all Installation Modules except GN 30 OC. PS 3 F-Lock panel mount socket for GN 15 E, GN 30 E, and GN 50 E Installation Modules (see figs. 17 and 18). MF-DA panel mount socket for GN 15, GN 30, and GN 50 Installation Modules (see fig. 13). H 500 shock mount for GN 15 E, GN 30 E, and GN 50 E Installation Modules (see fig. 14). H 600 + A608 shock mount for all Installation Modules except HM 1000 (see figs. 15 and 16). SA 60 stand adapter for all Installation Modules except HM 1000 (see figs. 20, 21, and 22). SA 80 clamp for GN 15/30/50 E/ESP Installation Mod- ules (see figs. 23 and 24). ST 1, ST 45, ST 46 table stands for all Installation Mod- ules except HM 1000 (see figs. 19, 20, 21, and 22). 2 Description 4513_09_BDA_DAM_Hex0909_ps.qxd 11.09.2009 10:45 Uhr Seite 2526 DISCREET ACOUSTICS modular Note: Note that both the maximum working distance and the area covered by the microphone depend on the pickup angle. The smaller the pickup angle (hypercardioid), the longer the maximum distance between the talker and the microphone and the smaller the area covered by the mi- crophone. Whether an omnidirectional, cardioid, or hypercardioid capsule will give the best results therefore depends on the specific application situation (see Table 1). Omnidirectional capsules are primarily suited for record- ing use. Working Working Distance with Distance with Loudspeaker Gooseneck Hanging Capsule Polar Pattern Position Module Module CK 31 Cardioid Behind the 30 to 60 cm 1 to 3 m microphone only (1 to 2 ft) (3.5 to 10 ft.) Application: Sound systems CK 32 Omni Not relevant 30 to 200 cm 1 to 7 m (1 to 7 ft.) (3.5 to 23 ft.) Application: Recording only CK 33 Hypercardioid 90° to 135° off 30 to 90 cm 2 to 4 m microphone axis (1 to 3 ft.) (7 to 14 ft.) Application: Sound systems CK 47 Hypercardioid 90° to 135° off 30 to 90 cm 2 to 4 m microphone axis (1 to 3 ft.) (7 to 14 ft.) Application: High quality sound reinforcement even in acoustically difficult locations CK 80 Hypercardioid 90° to 135° off 30 to 90 cm 2 to 4 m microphone axis (1 to 3 ft.) (7 to 14 ft.) Application: Speech reinforcement Table 1: Microphone applications 3 Microphone Applications 4513_09_BDA_DAM_Hex0909_ps.qxd 11.09.2009 10:45 Uhr Seite 2627 DISCREET ACOUSTICS modular

LED Ring, Bass Cut Fig. 1: Opening the DPA-P. Refer to fig. 1. All Discreet Acoustics Modular Capsule Modules are con- denser microphones and therefore require a power sup- ply (phantom power). The Installation Modules have been designed for connection to microphone inputs with 9 to 52 V phantom power.

1. Screw the Capsule Module onto the Installation Mod-

ule. The screw thread is relatively fine and therefore very smooth-running. Make sure not to tilt the capsule when placing it on the Installation Module thread be- cause this would damage the thread.

2. To lock the capsule, use commercial minimum-tack

screw locking adhesive that allows you to unscrew the capsule later if need be.

• Before replacing a Capsule Module, be sure to switch your sound system OFF in order to prevent unwanted noise. Prior to using the GN 15/30/50 ESP, you may choose to program the functions of the ON/OFF key, LED ring, and bass cut filter as detailed in Tables 2/2a on pages 28/29.

1. Use a screwdriver to lever the ON/OFF button (1) out

2. Unscrew the fixing screw (2) CCW.

3. Touch a bare, grounded metal part to discharge any

static charge that may have built up on your body. (Electrostatic charges may damage electronic cir- cuits.)

4. Pull the circuit board out of the shell WITH EXTRA

CARE. 4 Installation and Connection

• At the factory, jumpers have been placed in positions 1, 3, 5, and 7: - On powering up, the microphone will be muted and the LED ring will be dark. - To open the microphone, press the ON/OFF key. The LED ring will be lit to indicate the microphone is open. - To mute the microphone, press the ON/OFF key again. The LED ring will go out. Positions 1 and 7 set the following functions:

• Positions 1 and 7 will not affect the function of the ON/OFF key. 4 Installation and Connection Position Jumper in place No jumper 1 Flat frequency response Bass rolloff: -6 dB below 200 Hz 7 Mic on/off -> LED on/off LED off

Table 2a: ON/OFF Key Positions 2 through 6 set the following functions: DISCREET ACOUSTICS modular ON/OFF Key Functions Jumper Configurations Push-to-mute Push-to-talk Microphone permanently ON. Key disabled. Microphone OFF on system power-up Microphone ON on system power-up Microphone ON/OFF

Important: Fig. 3: Inserting the circuit board into the barrel. Important: Refer to fig. 3.

• Positions, 2, 3, 4: Be sure to place a jumper at one (but no more than one) of these three positions. If you place no jumper at any of these positions, pushing the ON/OFF button will have no effect.

• Positions 5, 6: Make sure there is a jumper placed at one of these positions at all times. With jumpers at both or none of these positions, the microphone status on power-up will be undefined.

• Never place two jumpers at positions 6 and 2 or 5 and 4 at the same time. This would effectively de- activate the ON/OFF button.

• Do not use any jumper configurations other than those given in Table 2a. Other configurations may cause malfunction.

5. Push the circuit board into the shell. To make the cir-

cuit board slide more easily into the shell, turn the cir- cuit board two or three times completely about its longitudinal axis as you push the circuit board in.

6. Push the ON/OFF button into the opening in the shell

to the point that the button clicks into place and tighten the fixing screw.

• To prevent the circuit board from getting caught inside the barrel, make absolutely sure that the connecting wires (1) will not lie on top of the jumpers (2). You can double-check on that through the opening for the ON/OFF key as you push the circuit board home. DISCREET ACOUSTICS modular

and Connection Note:

1. Use the supplied PS 3 F-Lock panel mount socket to

install the Installation Module in a tabletop or an op- tional SA 60 stand adapter to mount the Installation Module on a floor or table stand.

• For even better vibrational noise rejection, you can fix the Installation Module to the tabletop with an op- tional H 500 (see fig. 14) or H 600 + A 608 shock mount (see figs. 15 and 16).

2. Use a shielded cable to connect the Installation Mod-

ule to a microphone input with phantom power.

3. If the phantom power on your mixing console is

Installation, Connection Fig. 4: DPA circuit board

• Activating the Bass Cut Refer to fig. 4.

• Installation and Connection The LED rings on the GN 15/30/50 E operate off phan- tom power. If you connected the microphone correctly, the LED will be lit at moderate intensity as soon as you switch the sys- tem and phantom power on. This indicates that the sys- tem is correctly wired and ready to operate but NOT that the microphone channel is open. The DPA phantom power adapter provides a 6-dB/octave bass cut filter below 200 Hz to reduce low-frequency noise.

1. Before grasping the circuit board, touch a bare,

grounded metal part to discharge any static charge that may have built up on your body. (Electrostatic charges may damage electronic circuits.)

2. Remove jumper J1 from the circuit board of the phan-

Installation, Conne ection

Indication Pins 2 and 4 on the 5-pin XLR connector are available for powering the LED ring from an external source. The specifications of resistor R1 depend on the available powering voltage V: Refer to Sections 4.2.2 and 4.3.2. The LED rings on the GN 15/30/50 Installation Modules will be powered from the phantom supply. (See also Sec- tion 4.3.1.) To obtain an open channel indication, the installation tech- nician may connect the LED ring to an external power source. In this mode, the LED ring will light much more brightly to draw the required attention to the open micro- phone. DISCREET ACOUSTICS modular

Audio ground Audio + Audio - LED + LED -

Installation, Connection Note:

• Connecting to a Bodypack T Trans- mitter

1. Unsolder the black wire (LED +) and the outer shield

(LED -) from the DPA phantom power adapter.

2. Connect the black wire (LED +) and the outer shield

(LED -) to a voltage source with an output voltage as per Table 4:

1. Drill an 11-mm (7/16") hole through the tabletop.

2. Thread the connecting cable of the Installation Mod-

ule through the opening and the supplied fixing screw.

3. Screw the fixing screw into the Installation Module

from below to fix the Installation Module in place.

• For even better vibrational noise rejection, you can fix the Installation Module to the tabletop with an optional H 600 + A 608 shock mount (see figs. 15 and 16).

1. Plug the cable of the DPA phantom power adapter

into the female mini XLR connector on the connecting cable of the Installation Module.

2. Use a shielded cable to connect the DPA phantom

power adapter to a microphone input with phantom power.

3. If the phantom power on your mixing console is

switchable, switch the phantom power on. (Refer to the instruction manual for your mixing console.) The Capsule Module and the LED ring will be pow- ered from the phantom supply. You may also connect the GN 15, GN 30, and GN 50 in- stallation modules to a PT 40, PT 400, or PT 4000 body- pack transmitter from AKG. All you need to do is change the wiring of the mini XLR connector as shown in fig. 6 on page 35: DISCREET ACOUSTICS modular Voltage Req`d resistor Max. power 6 V 390 Ω 0.1 W 12 V 1k Ω 0.25 W 24 V 2.2 kΩ 0.25 W 48 V 4.7 kΩ 0.5 W 4513_09_BDA_DAM_Hex0909_ps.qxd 11.09.2009 10:45 Uhr Seite 344 Installation and Connection

Fig. 6: Connector pinout for connecting to bodypacks

Bass Cut Refer to fig. 25 on page 126.

and Connection Refer to fig. 25 on page 126. Pin 1: shield Black wire: unused Pin 2: red wire (in phase) Outer shield: unused Pin 3: bridge to pin 2 The LED rings on the GN 30/50 Minijack Installation Mod- ules will be powered from the phantom supply. (See also

To obtain an open channel indication, the installation tech- nician may connect the LED ring to an external power source. In this mode, the LED ring will light much more brightly to draw the required attention to the open micro- phone.

1. Unsolder the black wire (LED +) and the outer shield

(LED -) from the HSC mounting flange and insulate the bare ends of the two wires.

2. Solder to the two contacts on the HSC that are now

unused a two-conductor cable for powering the LED ring.

• To activate the bass cut, refer to Section 4.3.2.

1. Drill a hole 40 to 42 mm (1.6 to 1.7 in.) in diameter into

2. Use the supplied screws to fix the mounting flange in

adapter to the underside of the table.

4. Use a shielded cable to connect the DPA phantom

power adapter to a microphone input with phantom power. DISCREET ACOUSTICS modular Shield Wire bridge Red (in phase)

• To activate bass cut, refer to Sec- tion 4.3.2.

• For external powering of LED ring, refer to Sec- tion 4.5.1. Refer to fig. 7 (left).

Extension Refer to fig. 7 (right). Fig. 7: GN 155 SET.

5. If the phantom power on your mixing console is

switchable, switch the phantom power on. (Refer to the instruction manual for your mixing console.)

6. External powering only: Connect the feeder cable for

the LED ring to a suitable voltage source.

7. Insert the jack plug on the gooseneck into the mini

jack on the mounting flange and screw the gooseneck down.

3. Connect the DPA phan-

tom power adapter to a microphone input with phantom power.

2. Screw the extension

sheath (4) over the ex- tension stub (3).

1. Prior to installing the HM 1000, straighten the cable

by carefully pulling it through your fingers. Make sure not to buckle or twist the cable.

2. Fasten a hook to the ceiling, use an existing hook, or

stretch a line across the hall.

3. Pass the cable through the hook or over the line so

that it will hang at the desired height. DISCREET ACOUSTICS modular

4. Fix the cable in place with electrician's tape.

• Do not tie a knot into the cable to hang it on the hook.

5. Hold the cable with one hand and turn the micro-

phone carefully into the desired position.

• To activate the bass cut, refer to Section 4.3.2.

• To power the LED ring from an external source, refer to Section 4.5.1. To keep the microphone steady even in a draft,

1. Stretch a suitable length of fishing line horizontally

across the room, passing the fishing line through the eye on the HM 1000.

2. Fix the fishing line to two opposite walls so as to cre-

Installation Module Also read the instruction manual of the HT 4000 hand- held transmitter! LED ring: 4 Installation and Connection

Refer to section 4.5.2, Audio Connection

held transmitter CW.

3. Use the SA 63 stand adapter supplied with the trans-

mitter to mount the transmitter on an (optional) ST 45 table stand.

• The LED ring will remain lit even if you press the MUTE button on the transmitter! Remember that the LED ring does NOT necessarily indicate that the microphone is open and will not ex- tinguish unless you switch the transmitter OFF.

• Of course, you may also use the microphone hand- held, e.g., for questions from the audience. The GN 30 OC Installation Modules has been designed for 1.5 V to 10 V a-b powering. The unterminated cable provides the following connections: Red: microphone (hot), supply voltage + Shield: Microphone (ground), supply voltage - Black: LED + Outer shield: LED -

1. Connect the microphone wires to a microphone input

2. Connect the black wire (LED +) and the outer screen

(LED -) to a voltage source with an output voltage as per Table 4 on page 30.

• GN 15/30/50 ESP: Referring to fig. 2 and Table 2 on page 28, remove the jumper from position 7.

• GN 15/30/50, GN 15/30/50 E, GN 30/50 Minijack, GN 155 SET, HM 1000: Referring to fig. 4 on page 32, remove jumper J2.

• GN 30 OC: Disconnect the LED feeder cable from the voltage source. The unlit LED ring is nearly invisible because its color matches that of the case. DISCREET ACOUSTICS modular Important: Note:

Audio ground Audio + Audio - LED + LED -

Audio ground Audio + Audio - LED + LED -

Audio ground Audio + Audio - LED + LED -

Audio ground Audio + Audio - LED + LED -